BMW subwoofer set with 2 x Ci5, 2 ohms | for MATCH DSP amplifiers

Want to really boost the bass in your BMW? Then this set is just what you need. This set includes everything you need to replace your BMW's woofers. Two subwoofers with matching mounting rings and the necessary damping material.

Features

• Exceptionally high excursion – enables high sound pressure and impressive bass reproduction
• Hybrid flat woofer concept – Perfect balance between a powerful subwoofer and a woofer that covers a frequency range of 25 to 500 Hz
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• Minimal mounting depth – Innovative basket design with a mounting depth of only 47 mm allows for use in confined spaces
• Compact dimensions with maximum performance – despite its small outer diameter, the Ci5 S200FM has the same diaphragm area as typical 200 mm drivers
• Lightweight yet extremely rigid polypropylene diaphragm for phenomenal sound performance
• Glass bead reinforced high-tech polymer composite basket for maximum rigidity and minimal resonances
• Powerful magnet system For high efficiency and optimal impulse response. Perfect for complex applications – can be installed under the seats in many BMW models. Please check compatibility using the Flexmount Finder from Audiotec Fischer. Technical Data:

  RMS / Max. Power Handling:	P	200 / 400 Watts
  Impedance:	Z	1 x 2 Ω
  DC resistance	Re	3.6 Ω
  Frequency range		25 Hz - 500 Hz
  Resonance frequency	Fs	55 Hz
  Mechanical quality	Qms	8.31
  Electrical quality	Qes	0.88
  Overall quality	Qts	0.80
  Compliance	Cms	256 µm/N
  Equivalent volume	Vas	13.5 L
  Power factor	B*I	6.7 Tm
  Efficiency	SPL	90 dB @ 2.83V / 1m 87 dB @ 1W / 1m
  Membrane area	Sd	194 cm²
  Moving mass	Mms	32 g
  Membrane material		Injected polypropylene
  Mechanical resistance	Rms	1.39 kg/s
  Voice coil diameter	ø	38 mm
  Voice coil winding width		20.0 mm
  Max. linear diaphragm stroke	Xmax	+/- 7.5 mm
  Outer diameter	ø	195 mm
  Installation diameter	ø	173.5 mm
  Installation depth		47.0 mm

  Scope of delivery

  Helix Ci5 S200FM-S2 subwoofer (pair)
  Helix CFMK200 BMW.1S installation adapter (pair)
  2 x option insulation mat approx. 25 x 25cm